Machine tool headstock



" from the compartment through the rear cover 2l l The drive for the unit is provided by a suitable l source'of power such Vas the motor 25,the shaft ffftion withthe primary power shaft 26 of the unit. p The primary andL constantly shaft. 26is I provided-with a bevengeu n meshing wien the i f cooperating `bevel gear 2l for constantly driv- V `*ing-apump shaft "which operates a pumpllll l, for drawing lubricating. Vand/or uid pressure implying. oil from thepipe Ilv leading'. froman" tothe fluid pressure jsupplyi l ahift rod controlling valve and/or to lubricating 4 -It will beunderstoodthat the actuating means for the gear shifting rods may be 4of" uid. pressuretypev setfforth in-detail in .inyy g met Patent No, 11,794,412. obviously, equivalent `ai'-i'nechanicalshifting means may '5 beremployed andit is .not deemed necessary to 1 application with? the vld etails"o-f.` constmctionor operation. of auch mechanism. Suf-k it.utnerefore.`1tofny that remotelyeont ouedv power. means Iare contemplated. .v 'specincshift-md'control "2f illustrateL a` 'fluidipres- .v Qasaniiiustrationo to a primary'driv-*gearfli through'a clutch eieinen't I2` whlehmaybeactuated by the main clutch control ievern and' its link u. v more clearly lnjFrlgs'Z and 3', the link'is connected'witn a" llever which is secured at to" lat"traiiisversely extending rock shaft wheebypivt'al movement fof the hand lever u and responsivemovementfoi' the lever 45 `will i'tikilih-sh'iaftflV ahaftllcarries forked I1 which engagea clutch actuating collar mo ements of which" will*` act through toggle Ilf'toj vengage fthe 5 clutch "nwuponpivotal ent' of lthe -ha'iid lever Il "in `the? direction larrowymarked'clutch".--Thus, when the ahaftf "is ina 'counterclockwise direction' andthe" arman are'thus moved forthevclut'ch 'which is of conventional con- `v willgbe'feng'agedand the'fclutchelement ne l{ninna-yarrive gwn-win thus be l l fated 'anime drive han n mustn irivejjg'earl'of gears;` i if orltir'iuedmovement asjb'ymornentum of "the Il of the associated'- head stock train.

an llwhichcencirclea theclutch endl! Aofthe'band'brake is tionary piniillto va projection 5I ng i. vvThe"oppositeend ofthe brake :a reciprocatingvertically v theiuppenendof which protrudelfrom the to ofthe housing and is pro ofwhich is designed for removable driving relaoil sump, formed in the base ofthe'compartmentx, Qdlict Q01 the vided with a spool-like collar 56 which receives between its flanges the forward end 51 of a manually operated bell crank lever which is pivoted from the main housing as at 58, its opposite end being connectedat 59 with a lug carried by the shaft I6. Thus, when the parts move in counterclockwise direction fortheactuation of the clutchV to complete the drive, lthe connection 59 rocks the bellcrank lever in clockwise direction,

thus moving the .rod' 55 downwardly to insure release of the clutch housing by the band brake. Whenthe handle I3 isV moved in the opposite direction past neutral as indicated by the arrow vimirkedifb'ralkeym Fig. 1, the rock shaft 4s will'be rotatediin, clockwise direction, whereby the forward end 51 of the bell crank will be raisedfand will raisewith it the rod 55 thus ap- ;ment being:y such that the brake'can not beap- V plied whenthe clutch is engaged. -The arrangement further supplies a neutral .position when the clutch 1 may; be disengaged without applying thebrakef n' I y f E :l

Fig., l; it lwillbe noted `that the rByreferring to iorwaldiendy offthe shaft 8l carries albevel, gear 89. whichis adapted todrive gearV 90 on the lower vface-of thef table. 4Obviously,- some otherconventionalftable Vdrive may be substituted.

that meansareprovided for controlling the interrelationofthe-,gear shifting rods Bland 69 so as -to prevent their misadjustment such as might resultintheenmeshment of more than onewtrain of gears.` l Each rodv 68; or 69 isprovided with apair @of s'pacedangularly formed grooves 92, the sidev walls ofv whichlare'slanting outwardly to form cam surfaces. The grooves 9,2 are adapted toco- -f withreferencetcirjigsfv4 and 46, 1t will be seen operate with apertured rod interlocking plates 93 whichv are loosely mounted,within suitable guide ,spaces formed, in a tcontrol bracketextensionilofcthe unit frame I8.l From further considerationof the drawings. itwillbenoted that the upper four rods are arranged to ,extend through the upper pair of plates 83. The rtwo center rods-extend through onlyA ,one such plate whiiethe lower threey rods extend lthrough the the first rod were moved sothatits second groove registeredwith th eape rture of the second plate,

Y thethird rpdwould be free lto lmoveand itsmove- Amentwould'lockthe flrstrod. In like manner all four of the rods areinterrelated through 'the j plates, AsAssasin,rig. e, the intenocking movel' ment maybe a sidemov'ement thus to interlocktwo parallel rods. `It willreadilyfbe seen that the arrangement ofv groove'sand plates may be such as to 'preclude' anyundesirable rodA position combinations'. Bythe' use of a'plurality of rvs'uchiplates various interlockingr combinations may be provided forL so as to control a plurality of yrods;-iHoweve'r, .for f the. control of -merely two rods as indicated by the center two .rods .of-.thecombinatlonshowm'only. a singley plate need be used since movement of one can be arranged to `76 l if im Qllf ,wim "vm movement oflthe other ,'without, recoursefto n` clutchlgexcept atsuoh times gears are in proper `relation as `by 3variousrods. To this end,` adjacentitsend with apair of,` shallow reduced portions 9L there being as many such portions as there are operable posi,- f tions `for. each rod; in the presentinstance two being Suiicienti- When therodsfare in properly adjusted `position,"the shallow portions` Slregisi ter with ya vertical bore in the'bracket, through which extends a Lnotchedclutch eontrol, rod 81. he` \upp 'er end of which isfprovided withga spool Olli` engaging the rearf extension f8! oi the ":'ross i r everwhich throughttheflink-pivoted`1"at 58 coni trolsthe throwingofthemain clutch. It will be Y seenthat should afrodjbe outofgits operabletposii tion,` `neitherfoffits notcheswill register` withthe i Se as` whenthe will:bepreventedfbykthe striking of itsinotched lwalljwith such rod.` Thus, itiwill be `seen that the full throwing of the clutch will be prevented ex `ceptat,suchtimesas Whenall of the rods `are, positioned for an operative gear combination. In order to provide for a slight snubbing` of the clutch, which may be desirable in instances `where i the gearsf are notproperly adjusted through a sidewise clashing of the gear` teeth, itwillbe noted that the notches or the rod` 181 ,are slightly` elongated thus to permita restrictedreciprocal move` mentfof ther-od` regardless ofthe gear posil `tion `However,` the movement is such as to `permit slight snubbingfactionand" to prevent" full utch engagement."` y i i f ,Y l t From the foregoing it` will be observedgthat the" invention 'provides a simple,` efficient and eiective structure forcarrying out the desiderata set `forth. Obviously, numerous changes `and modi-` iications may be Vresorted to Lwithout departing` from thespirit oriscope of the appended claims;

Having thus `fset`iorth the nture of my inven tion `whetIclaim is: 1 v x i w i l "11.Inan interlocking mechanism for gearshiit-- "ing rods, thecombinationy,with acpluraflity o? groups of rods, each groupincludingtwol ormore" rods oiinterlocking meansfor the rods offeach (group comprisingjapertured plates throughwhich "ktheyrodsextend"and which are movable by certain `oi' the rodstopreclude movement` of `certain other rods,.sai`d means includingone plate forgroups of of` two rods andtwo such plates for groups of three or morerodspgw j 1 interlocking mechanism `comprising a plurality `of movable rods,` said rods being adapted rto moveshiitable `gears in a variable speed transplurality of therods leaving certain other of the l `lceriain other oi' theroos wherebyall o! ,therods are heldin a predetermined lproper `positig'n for "fan operative gear-combination. 1

An interi cking mechanism comprising a plurality ofmovablerods, the rods being capable l of `n1ovi`ng shiftableA gears in f o. variable l speedy transmission or l the like, platesfhaving openings therein throughwhich openingsthe rods pass` and when f in a `predetterxnined position interlock a :lpiuralitygoi the `"rods` leaving certain other ory the rods free, and means` for interlocking the said certain other of the rods wliereby'all oi` the` rods are held ina iixed proper" tivegearlcombinatiom, ,i l 15 l. An interlocking mechanismcomprising `s.

i soothed bore and thusa verticalniovementof the rod 91 ci the rods is operated by the `clutch wherebyf all of the rodsare heldj in a `ilxed proper posii tion for an operativegear combination andes 1 gear` combination and as omission orthe like, `plate meansfor interlocking ai 11rods freefandmeans forkinterlockingfthe said y positionlioranfoperai te @vestingen gears ,me vanaiespeednans, mission or the like,` movable platehrneans, means are opposite the said openings `and a portion o! i the plate meansat the openings is in the annular grooves oft the an interlockingoi.' the rods thuspositioned is `eilected and certain other of "rthe rodslnot. in such position `are freeg,l and t Ameans for linterlocking the 4 said certain` other @of the rods whereby all of the rodsare held in a fixed properlpesitionfor operativegear coxn-4 -binatiorn` y i 5. interlocking sion has in connectiontherewith `a clutch, and the means for interlocking the` said certain other such permitting the clutch to function. i

6."An` interlocking vmechanismfcomprising `a `lkann,brLinbvbijjrdfebahasta annular groove therein, :said rodsbeing adapted mechanism as recited i; claim `4 `wherein, the `variable speed` transmisg f plurality of movable rods, said rodsbeingadapti ed to move shiitable gears ina variable speed e `transmission or the like `having in connection therewith a "clutch, lmovable plate meansfor `interlockingalpluralityfoi the rods leaving cer-- tainyotherfof thefrods free, means formoving the "plate rneans `and externally `operable means forinterlocking thesaid' certain other oi the rods` Y whereby all of the rods are held ina fixed proper positionfor anoperative `gear combination and as such permitting the clutch to function.

7J An ,interlocking mechanism comprising a plurality of movable rods, said rods being adapted to move shiftablegearsi-n a, variable `speed transmissionorthe like having infconnection` therewith? a clutch; movable plate Vmeans for interlocking apluralityof the rods leavingfcertain Rother of thefrods free,` `meansior moving thef plate meansgand means adapted tobe operated by theclutch for interlocking the said certain other of `the j rods whereby all of the rods are heldin a fixed propen positionfor an operative clutch to function.

i 8. An i interlockingfmechanism i comprising; a i

, plurality o! movable rods, said rods being adapted to rnove` shiftablefgears in a variable speed transmissionor the' like having in'` connection therewith a clutch, movable plat`emeans`iorin tain other-of `the rods free,` formoving theplatemeans, and `externally operable means operated bythe clutchfor interlockingthe said "theciutcnto ninemsn; r f

9j. An .interioekinrfneciianisinyenipnsmg a plurality of movable rods, fsaid rods `belingadaputtransmission l or l thee like having in" connection therewith a clutch, `a pluri`aility"`oi` plates,` the l Aplates serving tol interlock a; plurality` ofthe rods i i while `leavingjcertain other of the `rods free, `means er `position `for an `operative gear combination,

such lpermitting the its terlocking a pluralitylof therode, leavingoer-` `for interlocking the saidgmm ther the mds, r n iwhefebyi all :0f the` rodsare nele` 1n e med prop.

` "1 nud ,lneons for connecting the clutch `with the provided with openings through which the rods named inclus `so as to pe'rinit the clutch 'to ysind means for moving the plates.

, function only when yall ofthe rods are held in 11. rAn interlocking mechanism as'recited in for an operative gear claim 9, wherein the plates re movable, and

\ Iotplnllntion."V p n Y i Y f' the 'plates are 'moved by the rods during shifting 5 g V1 10, interlocking mechanism as recited in ofthe latter. i" v l; wherein meplaes are movable and are f FRANK vH. MUssLER. 

